LG C3400 Service Manual page 26

• AD6535 is an ADI designed Analog Baseband processor. AD6535 covers the
rocessing GMSK modulation interface, Aux ADC, Voice signal processing and
Power Management.
• AD6535 consists of
1. BB Transmit section
• This section generates in-phase and quadrature BB modulated GMSK signals.
• Digital GMSK modulator, 10-bit DACs, Reconstruction Filter
2. BB Receive section
• 2 identical ADC channels that process BB in-phase and quadrature input signals.
3. Auxiliary section
• 2 auxiliary DASs AFC DAC, IDAC, AUX ADC
• AUX ADC : 6 channels 10 bits
• AFC DAC : 13 bits
• IDAC : 10 bits
4. Voiceband section
• Receive audio signal from MIC.
• Send audio signal to Speaker
• It interconnect with external device like main microphone, main receiver, headset
microphone and Hands-free kit.
5. Power Management section
• 11 LDOs Block in the AD6535.
- V\CORE, VMEM, VEXT, VSIM, VRTC, VBACK, VABB, VMIC, VVCXO, VAPP, VUSB
• Battery Charging Block
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3. TECHNICAL BRIEF